Question

The radius of a circular swimming pool is 7.8 meters. Which is closest to the circumference of this swimming pool?

f 48.98 m g 191.04 m h 24.49 m j 47.76 m

Answer 1

F. 48.98 m

Explanation:

What is circumference?

• The circumference of a circle is the distance around the circle, otherwise known as the perimeter.
• The formula to find the circumference of a circle is 2πr, or if you're given the diameter, πd

How does it apply here?

• We are asked to find the closest circumference given of the swimming pool. We are also given the radius of the pool as 7.8 meters.

Solving

Step 1: Plug in your values.

• 
  `2 * 3.14 * 7.8`

Step 2: Simplify.

• 
  `(2*3.14)*7.8 = 6.28 * 7.8`
• 
  `6.28 *7.8 = 48.984`
• 48.984 ≈ 48.98

Therefore, the correct answer is F. 48.98 meters.